UI prototype with jquery-console

The idea is to create a quick and dirty prototype with jquery-console and see if it's suitable for the project presentation.

To do the fronted part of the project, I have decided to create a model, which wraps a REPL session. The model can be persisted in an in-memory storage.

Now, this will cause problems with multi-workers and multi-threaded servers, but it will work fine for a typical development session. There is just no easy way to store a REPL (with a specific binding) session in anything that will be marshalled sanely. For now, we just won't support fancy servers.

A cons of the jquery-console is the rails-jquery dependency, but for now, we can live with that.

Everything is in an early stage and any feedback will be appreciated.